Driver alert sign



FIG. 1 is a front view of a driver alert sign showing my new design;

FIG. 2 is a rear view of the driver alert sign;

FIG. 3 is a left side view of the driver alert sign, a right side view being a mirror image thereof;

FIG. 4 is a top view of the driver alert sign, a bottom view being a mirror image thereof; and,

FIG. 5 is top rear side perspective view of the driver alert sign.

The broken lines in FIG. 1 are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a driver alert sign, as shown and described. 